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| Content Provider | ACM Digital Library |
|---|---|
| Author | Jain, Manish Dovrolis, Constantinos |
| Abstract | The available bandwidth (avail-bw) in a network path is of major importance in congestion control, streaming applications, quality-of-service verification, server selection, and overlay networks. We describe an end-to-end methodology, called self-loading periodic streams (SLoPS), for measuring avail-bw. The basic idea in SLoPS is that the one-way delays of a periodic packet stream show an increasing trend when the stream's rate is higher than the avail-bw. We implemented SLoPS in a tool called $\textit{pathload}.$ The accuracy of the tool has been evaluated with both simulations and experiments over real-world Internet paths. $\textit{Pathload}$ is nonintrusive, meaning that it does not cause significant increases in the network utilization, delays, or losses. We used $\textit{pathload}$ to evaluate the variability ("dynamics") of the avail-bw in internet paths. The avail-bw becomes significantly more variable in heavily utilized paths, as well as in paths with limited capacity (probably due to a lower degree of statistical multiplexing). We finally examine the relation between avail-bw and TCP throughput. A persistent TCP connection can be used to roughly measure the avail-bw in a path, but TCP saturates the path and increases significantly the path delays and jitter. |
| Starting Page | 537 |
| Ending Page | 549 |
| Page Count | 13 |
| File Format | |
| ISSN | 10636692 |
| DOI | 10.1109/TNET.2003.815304 |
| Volume Number | 11 |
| Issue Number | 4 |
| Journal | IEEE/ACM Transactions on Networking (TON) |
| Language | English |
| Publisher | Association for Computing Machinery (ACM) |
| Publisher Date | 2003-08-01 |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Active probing Bottleneck bandwidth Bulk transfer capacity Network capacity Packet pair dispersion |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering Computer Networks and Communications Software Computer Science Applications |
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